You file your ITR. A few weeks later, an email lands in your inbox. Subject line: “Intimation under Section 143(1) of the Income Tax Act.”
Most people either ignore it or panic. Neither is the right move.
This intimation is not a raid. It is not an accusation. It is an automated computer check the Income Tax Department runs on every single return filed. Understanding what it says, and connecting it to your investment choices, is what this article is about.
What Is Section 143(1) of the Income Tax Act
Section 143(1) of the Income Tax Act is a preliminary, automated assessment of your filed ITR. The Centralised Processing Centre (CPC) compares what you reported against TDS entries in Form 26AS, data in your Annual Information Statement (AIS), and the arithmetic accuracy of your calculations.
Note: Under the Income Tax Act, 2025 (effective April 1, 2026), Section 143(1) has been renumbered as Section 270. The process, timeline, and outcomes remain exactly the same.
Three Possible Outcomes
Once the check is done, the intimation lands in your registered email. It will say one of three things:
- No demand, no refund: Your return matches the department’s records. Everything checks out. No action needed.
- Refund due: You paid more tax than required. The excess will be credited to your bank account, provided the amount exceeds ₹100.
- Tax demand: The department’s calculation shows you paid less than required. You need to pay the difference or contest it within 30 days of receiving the notice.
Time Limit for This Intimation
The department has nine months from the end of the financial year in which you filed. Filed for FY 2024-25 in July 2025? The deadline is December 31, 2026. If nothing arrives by then, your return is deemed accepted. No news is good news.
How to Open and Read It
The intimation is a password-protected PDF. Password is your PAN in lowercase followed by your date of birth in DDMMYYYY format, no spaces.
Example: PAN is ABCDE1234F and DOB is 15/08/1985 → password is abcde1234f15081985
Once open, the document shows two columns, what you reported vs what CPC computed. Any difference between them is where the demand or refund comes from.
Common Reasons a Mismatch Shows Up
Most 143(1) mismatches are not serious. The usual suspects:
- FD interest earned but not declared in the ITR
- TDS deducted by two employers in the same year, not combined
- Savings account interest above ₹10,000 not reported
- Deduction claimed that does not appear in department records
Each traces back to an investment or income source that was either not disclosed or incorrectly reported, the direct link between Section 143(1) of the Income Tax Act and the types of investment in India you hold.
Types of Investment in India and Their Section 143(1) Risk
Different investments create different reporting requirements. Knowing which ones typically trigger mismatches helps in filing cleaner returns.
| Investment Type | Taxability | Common 143(1) Issue |
| Fixed Deposit | Interest fully taxable | FD interest not declared; TDS deducted but interest not reported |
| Savings Account | Interest above ₹10,000 taxable (80TTA) | Interest earned not shown in ITR |
| Equity Mutual Funds | LTCG above ₹1.25 lakh taxable at 12.5% | Capital gains not reported; AIS shows sale but ITR does not |
| Debt Mutual Funds | Gains taxed at slab rate | Redemption not captured in return |
| EPF / PPF | Largely exempt with conditions | Excess EPF interest on contributions above ₹2.5 lakh not reported |
| Life Insurance Maturity | Exempt under conditions; taxed as capital gains if premium exceeds threshold | Maturity amount showing in AIS but not reported |
| NPS | 60% lump sum exempt; annuity income taxable | Annuity income not included in total income |
| Stocks / Direct Equity | Short-term and long-term gains taxable | Sale reflected in AIS; gains missing from ITR |
The AIS now captures almost all financial transactions: bank interest, mutual fund redemptions, stock sales, property transactions. The department sees it all. If your ITR does not match this data, a 143(1) notice follows automatically.
What to Do When You Receive the Notice
Step 1: Open and read it
Compare the two columns, your computation vs CPC’s. Find the exact line where the difference is.
Step 2: Check your AIS and Form 26AS
Download both from the income tax portal. Match every income entry and TDS credit against what you filed.
Step 3: Respond within 30 days
- Agree with demand: Pay via Challan 280 on the portal
- Disagree: File a rectification under Section 154 with supporting documents
- Error was yours: File a revised return if the revision window is still open
How Better Investment Reporting Prevents This
Download your AIS in April before filing, it shows every financial transaction the department has on record. Match every entry against what you plan to report.
A few habits that help:
- Collect interest certificates from all banks, savings and FD both
- Track mutual fund redemptions through your Consolidated Account Statement (CAS)
- Verify whether any insurance maturity amount is exempt or taxable before filing
- If you switched jobs, get Form 16 from both employers and combine the income
The department already has this data. Matching it in your return before submitting is faster than responding to a notice after.
Bottom Line
Section 143(1) of the Income Tax Act is not a threat. It is a system check. Every return goes through it.
The gap, almost always, comes from an investment income that was not reported, FD interest, capital gains, insurance proceeds, or bank interest. Check your AIS before you file, report every income, and the intimation that follows will almost always say: no demand, no refund.
